Bagged my gun after some league shooting with the Kadet Kit on SP-01 Tactical. Two days later pulled it out to clean it and found the barrel had walked backwards and it looked as though the roll pin that holds the barrel in place had fallen out. Further investigation found the roll pin to have broken into three pieces, with the center piece still in the barrel lug.

I called CZUSA, and they are sending out a new pin (they told me I'll need to cut it to length), and that it would be here for this Monday's league night, but it hasn't arrived yet. So, I have been googling the crap out of this, and found a post where the poster had picked up an 1/8" pin at home depot, and used that. Well, I picked a couple up, and they are too big. I'm thinking the original pin is probably metric, and I will try to find one in the morning. It would be great if I knew what the diameter of that pin is supposed to be.